STM32 MCUs Motor control

Hi, I am using a Nucleo F401RE and a X-Nucleo-IHM07 shield for motor control applications. I am supplying 24V to the X-Nucleo via J1. I have removed jumper J9. I am then taking the 24V and dropping it to 5V and supplying it to the E5 pin. I have moved jumper JP5 to pins 2 and 3.When I power on the supply, the F401RE red led blinks red slowly. However, none of my peripherals work. It is only after I press the reset button on the F401RE that everything initializes. When I do this, the red light doesn't change.*Note: If I power on the supply, then connect to my computer, the act of connecting the usb causes the board to initialize and everything works.

Is there some Phase Frequency Detector (PFD) implemented with an STM32 available? In my application I need to be able to control a motors speed and phase.

HelloI have a steval-spin3201. It includes stm32f031 mcu. I am programming it by using stm32cubeide. When I was testing PWM and dead time, I noticed that the one of phase output is not synchronous with mosfet gate signal.I shared the scopes below. Can you help me to understand?

Hello,By analysing the encoder alignement procedure, it generates a magnetic field aligned with stator phase A (arbitrary name) by setting Iq = 0, Id = high_value.To do the same but with the adjacent phase B (for example), am I right saying I just need to set Iq = high_value * cos(120°), Id = * sin(120°) ?Thanks

I have the ST FOC motor control kit (Nucleo F302R8 , X-Nucleo- IMH07M1. I have been successful using FOC with sensorless feedback. I have installed and wired an absolute encoder and configured the number of pulses in the workbench. What I cannot find are instructions for aligning the encoder. I see the GUI in the motor control workbench has a button for "align encoder" but it is not clear to me how the offset is properly set. I have clicked align (small movement) and then start motor but I get no rotation, just high current draw and a locked rotor.Any help would be appreciated. Thanks!

Hello,I can successfully control my motor in torque mode and speed mode.However sometimes (randomly ?), at the first call to MC_StartMotor1(), after encoder aligment, the motor starts to spin in the wrong direction, faster and faster up to its max speed.This occurs more often in torque mode than in speed mode.When this occurs, the estimated Iq current has the wrong sign (normally on my setup, a Iq > 0 gives a speed > 0). So the PID in FOC_CurrControllerM1() effectively computes a command that will increase the torque in the wrong direction instead of a torque that would put it on the right direction.Any clue about this wrong sign ?What could I look at ?Setup:4 pole pairs BLDC motor3-sh Sensored FOC mode, 1024 PPR encoderIHM08M1 + Nucléo G474RE (or same with F401RE)MCSDK 6.0.0 (same with 5.Y.4)Thanks,

I have been looking into using feed forward for a project that requires a relatively high speed (~1300Hz electrical). I am trying to match a MATLAB simulation feed forward algorithm with the ST implementation but have some confusion.Taking the q-axis feed forward term as an example: wtemp1 = (((int32_t)(hSpeed_dpp) * Iqdref.d) / (int32_t)32768); wtemp2 = (wtemp1 * pHandle->wConstant_1D) / (int32_t)(hAvBusVoltage_d); wtemp2 *= (int32_t)2;   wtemp2 = wtemp1 + wtemp2 + pHandle->VqdAvPIout.q; SATURATION_TO_S16(wtemp2); pHandle->Vqdff.q = (int16_t)(wtemp2);Without the pHandle->VqdAvPIout.q term it makes complete sense to me, it is generating a feed forward term from two parts:Decoupling of the q and d axisCompensating for the actual Vbus voltage (i.e. if vbus is lower than nominal, the output needs to be higher to get the same effective voltage on the motor)For the discussion, let's call this part (i.e. [wtemp1 + wtemp2] in the above code):Vq,ff,comp = Vcomp * Vq,ffwhe

I have custom design PCB using STM32F302CBT6 as bldc motor speed controller with back emf. Half of the boards are failing to start the motor. After a power cycle motor start one time with PWM signal from 0.8ms to 2.2ms then after pwm goes to 0.8ms (motor stop) now the motor fails to start when pwm is increased above 0.8ms

I am trying to get oriented to STM32 environment for BLDC motor control. I have made it through motor profiler, motor control workbench, STM32CubeMX, and can generate a .ioc "I think that is the right file type" and load it to my B-G431B-ESC, butfor the life of me I can't find some existing examples for such to get me started in the actually coding in STM32cubeIDE. Something simple like the proper syntax for initializing the motor, starting the motor calling speed, torque, angle and such. please point me in a direction.I come from Arduino, self taught. there is a lot of available libraries in Arduino making it a lot easier to get started.

The MC SDK is sometimes hard to follow. Has anyone made any UML maps of the SDK or know of any tools to generate these maps? I knew I saw a tool to do this long ago, but now I can't find it again. Seems like a tool that would be widely used. Thanks!

I am a newer leraning motor FOC control. I study the generated code by MCSDK tool with hall (120 degree). Below is some question:In file mc_config.c, about hall configuration ".hMaxReliableMecSpeedUnit     = (uint16_t)(1.15*MAX_APPLICATION_SPEED_UNIT),". Here why need to times 1.15?In file mc_parameters.c, about ADC configuration, as below.ADCConfig1 = {  MC_ADC_CHANNEL_11<<ADC_JSQR_JSQ4_Pos          ,MC_ADC_CHANNEL_10<<ADC_JSQR_JSQ4_Pos          ,MC_ADC_CHANNEL_10<<ADC_JSQR_JSQ4_Pos          ,MC_ADC_CHANNEL_10<<ADC_JSQR_JSQ4_Pos          ,MC_ADC_CHANNEL_10<<ADC_JSQR_JSQ4_Pos          ,MC_ADC_CHANNEL_11<<ADC_JSQR_JSQ4_Pos        &n

I want you to help explain and help fix it.Motor 48 volts, 600 watts, number of pairs of poles 52/2=26or the motor is too big, please reply, thank you very much.

This is an issue with the st motor pilot in MC SDK.​I have seen this issue posted a few times befor​e and they fixed it by changing baud rates but that isn't working for me.​It connects under logs says successfully opened port. Next line says on next line try to configure the board

I have written this stepper code with a timer and I am getting different behaviour one out of five times. Maybe there is a good way I can monitor or record the consistency of pulses? But I think putting logs would clog up the code and cause the stepper to slow down like it does on Arduino, although I haven't tried that yet. Anyway, when I press a button it triggers the acceleration at the beginning of the movement and also to trigger starting the movement. I have hardcoded the values I want it to run at currently as I just wanted to get it working, but I can see it's behaving inconsistently. It will gather speed, plateaus for about 5 seconds, and then decelerates close to the end. But that one time out of five it will plateau for 1 second, maybe not even that. All help would be greatly appreciated, also hints and tips on Stm32CubeIDE would be great. For extra context, the counter period is set to 42 - 1volatile static int moveTriggered = 0; volatile static int step1 = 1;   volatil

Hi,I have a STEVAL-SPIN3204 board. I have opened the 6step_steval_spin3204 project on the ST motor control workbench, generated the code withe the following parameters using UPDATE button:STM32CubeMx: 6.5.0Target Toolchain: Keil MDK-ARM V5Firmware Package Version: STM32 FW V1.11.3HAL checked After opening, building and dowloading the file on the target from keil uvision 5 I cannot open the communication from the ST motor control workbench monitor. I already checked Baud rate on my com port (9600) and on the workbench (9600 too). The communication from STM32 cube programmer is OK. The only thing I modified was to remove bus voltage sensing (Keil linking error if not removed because of not enough memory on MCU) and the ARM compiler that is set to default version 6. Any idea of what's going wrong ? (PC on windows 7).Best regardsDavid

I know pin pa15 is the pwm input physically but it does not activate when building a motor profile or when building the program with stm32cube​MX. I tried manually without luck.​ verified with an oscilloscope that I am giving pa15 a proper pwm and frequency.​

Hi there,I'am using STEVAL-SPIN3201 evaluation board. I've reset PA11 for overcurrent output signal visible only to MCU and set PF6 and PF7 for overcurrent protection limit. Also, I've configured TIM1 channel 1 PA8 pin to center aligned pwm mode. When i look at to PWM signal, it is always high 12V and there is no PWM signal. What can be the problem?

Hey @ allthe setup: custom motor control PCBmicrocontroller: STM32G431CBU6gate-driver: UCC2721, 15Vthree shunt lowside current sense 150 µOhmOPAMP MAXIM MAX40056 20V/Vinverter stage: 24x IRF7759 (4 parallel)gate resistor 4,7 Ohmgate-source resistor 20 kOhm each FETmotor: 48V, 3 PP, Rs = 4mOhm, Ls= 10 µH, BEMF 3,3 Vrms/kRPM, 200A DC max, 10.000 RPM maxWorkbench settings: The motor runs fine even at 8000 RPM. The problem is that under small load of 2 kW (48V, 50 A DC, 4000 RPM), after 1-2 minutes of constant speed, a MOSFET burns through with an explosion, although the temperature at the inverter stage is only around 40°C and the FETs are cooled through a thermopad (1mm thick, 12 W/mK) and pressed onto a water cooled aluminium body. The cooling should be more than sufficient, as the same cooling system works fine on a motor controller from the competition with the same motor under full load (12 kW, 200 A DC) for 10 minutes and FET temperature <80°C.I am trying to find the cause f

Hello,In the documentation STM32 MC Motor Pilot :« Viewing and plotting registers with low-speed plotting.With this method of plot, any register can be plot but at low rate (polling every 200 ms by default) »I want to use the Motor Pilot plot (low speed) with polling less than 200 ms.How to change it?I would like to put 1 ms, is it possible? What is its minimum?Best regard

Hello,I control BLDC motor.Control the speed of the motor by changing the TIM->CCR.​I have a question while setting the time to change the value of CCR.If I change the value of CCR while I'm sending out PWM, will the Duty ratio change in the next cycle?​​​​Thanks.

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The MC Workbench tool generate a CubeMX 6.5.0 project, that in turns generate C code.Actual behaviorWhen I select in this CubeMX project Project Manager > Code Generator > Copy only the necessary files, the generated IAR 8.0 project does not compile because a bunch of missing .h files (mainlay related to Low-Level lib, as the _ll_ in the name suggests).Expected behaviorThe generated IAR project should compile and there should not be missing files.By the way, I note that LL functions are used despite in the MC Workbench I seleted "Use HAL" instead of LL.This generates ~160 files instead of the ~1400 files, what is much easier to archive better environmental-friendly (less disk resource and network traffic).

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